Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Flood Watch until December 26, 10:00 PM PST

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

53°F

12°C

Humidity	81%
Wind Speed	SW 4 MPH
Barometer	NA
Dewpoint	47°F (8°C)
Visibility	NA
Last update	26 Dec 02:10 PM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

2 Miles SSW Cupertino CA

Flood Watch December 26, 02:59pm until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 26, 02:59pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
This Afternoon
High: 54 °F
Chance
Showers
Tonight
Low: 42 °F
Chance
Showers
Saturday
High: 52 °F
Mostly Sunny
Saturday Night
Low: 36 °F
Partly Cloudy
Sunday
High: 54 °F
Sunny
Sunday Night
Low: 36 °F
Clear then
Patchy Frost
Monday
High: 58 °F
Areas Frost
then Sunny
Monday Night
Low: 38 °F
Clear then
Patchy Frost

Detailed Forecast

This Afternoon

A 50 percent chance of showers. Partly sunny, with a high near 54. South southwest wind 9 to 11 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight

A 30 percent chance of showers, mainly between 11pm and 3am. Mostly cloudy, with a low around 42. West wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Mostly sunny, with a high near 52. North northwest wind 3 to 7 mph.

Saturday Night

Partly cloudy, with a low around 36. Light north northeast wind.

Sunday

Sunny, with a high near 54. Calm wind becoming north around 5 mph in the afternoon.

Sunday Night

Patchy frost after 1am. Otherwise, clear, with a low around 36.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 58.

Monday Night

Patchy frost after 5am. Otherwise, clear, with a low around 38.